US Bridges

Monte Vista Terr over Johnson Gulch

Fair

Sonoma County, California · In Monte Rio · Structure no. 20C0524

Built
2001
24 years old
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel
Length
72 ft
1 main span
Daily traffic
200
2011 count
Owner
County
County Highway Agency

About this bridge

Monte Vista Terr over Johnson Gulch is a steel truss - thru carrying Monte Vista Terr over Johnson Gulch in Sonoma County, California. It was built in 2001, so it is 24 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 200 vehicles a day, roughly 1% of them trucks, projected to reach 273 by 2042. The structure is 72 ft (21.8 m) long and 14 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMonte Vista Terr
CrossesJohnson Gulch
LocationIn Monte Rio
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.47048, -123.02481
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating29.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length72 ft (21.8 m)
Longest span70 ft (21.2 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic273 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Monte Vista Terr over Johnson Gulch built?

It was built in 2001, making it 24 years old in 2025.

What condition is Monte Vista Terr over Johnson Gulch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Monte Vista Terr over Johnson Gulch carry?

About 200 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Monte Vista Terr over Johnson Gulch?

The structure is 72 ft (21.8 m) long with a longest span of 70 ft (21.2 m) and a deck 14 ft wide.

Who owns Monte Vista Terr over Johnson Gulch?

It is owned by the County Highway Agency.